GSD-2022-1004062 tty: fix deadlock caused by calling printk() under tty_port->lock
A deadlock in the Linux kernel tty subsystem can cause a denial of service when printk is called under a specific lock.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- None listed
What is GSD-2022-1004062?
GSD-2022-1004062 is a denial of service vulnerability in Kernel, published on 28 Jun 2022.
Official description
tty: fix deadlock caused by calling printk() under tty_port->lock
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.318 by commit 4af21b12a60ed2d3642284f4f85b42d7dc6ac246, it was introduced in version v4.9.117 by commit d83904cb2eb2c4d937eaf15032214b0578f25099. For more details please see the references link.
Which versions are affected by GSD-2022-1004062?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1004062?
No fix has been published for GSD-2022-1004062 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2022-1004062 being exploited?
There is no known exploitation of GSD-2022-1004062 in the wild and no public exploit code.